Improvement in head-blocks pgr saw-mills



o To allwhom it mtl/y i Be it lknowrrthat `I,`jf'Jo`A,"`oHIM MANN, of' `tbe city of Richmond, `county of `Wayne, and

` more plainly shown at MM1i`n"'1ig. 2.

` "levers M M,'also moreclearlyr realistas aaa...

i IOAQHIMEEIEDEIOE HARTMANN, oEDIcHMoND, INDIANA, AssrGNoETo EIMSELE,

1- THEINEioH W. Mo'ENINGsrAR, AND EUGENE MOVEI..

`Letters .Patent o. 95,224, dated September 28, 1869.

r IMPROVEMENT :EN PrEAD-BLOQKS Een SAW-MILLS.

The Schedule refered`to in these Letters Patent and makina' part of the same.l

FRIEDRICH HAn'rf Statej of Indiana,`

have invented new and useful Imi proveinents in Headl andflail-Blocks. for Saw- Mills; and Idof hereby deelarethat the following is a full,

cleaiyaud exact descriptionl` of the construction and op `eration ofthe saine, `reference being had to the annexed j drawings, making partA of this 'speciticatiom inwhichl Figure l is aperspectiveyiew.

l Figure 2'is a section reversed.

Figure Slis thereversed 'side of' the head-block.` Figure 4 is`a wheel andpinion. L' l i `Figure 5"is a vibrating plate. o

wo, showing one-half of Figure 6 is apinion cut iu' `a.conical-shaped,hole.` o o The same` 1etters,i11gtheo'dilerent figures, refer to corresponding parts.'

B is mtal-block. z

A is Vthe headblock, shown o at' iig. 1.

o o are dovessi-slides, fwat Sea@ of metes en top,

` one. of which is also seenat iig. 3.

` DD are knees, for rpnshi'ng the log.4 Said knees slide on the pieces C C. are pieces of timber, to which vthe head-block is secured, and on whichl the-tail-bloek siidesand rests. A part of one`of' said piecesE isfsholwu at fig. 2. o x

` A F is a bevelled, cog-wheel, also seen at figs. 2 aud 4.

seen at fig. `1, but fully shown' at G in iig. 4.

His a bevel-pinion, two of which are more plainly shown at H' H in lig. 2, and halt' of one at H in iig. 6. I is a vibrating piece, fullyshown at iig. 5.

K is a support, attached to one of the piecesE, also partly shown at f `L L, bearingsfor the-levers `M and Shifters V, more plainly shownat .L L inig.v

M M are levers, with' shiters yV V at their en ds,

N N are uprights, to serve-as rests and stops for the `shown at fig. 2.

0 is a crank.

1: is a shaft, to which the. crank; O is attached, and

more clearly shown at I in iig; 4. Q, guidessfor the lever Q Q QQ' are holes, in which a piu or pins'may be.`

o placed, alternately, `to stop `the lever R.

`Risalever.

S is a bearing, towhich lever R isattached, having its fulcinm at the lower end'. j

pinion G. o o o U ,U are sliding cones, with slots at their outer ends. Said conesare more plainly shown at U U in iig.f 2. V V are shifters on the' ends of lever's M, which are "adjusted to grooves in oraround `the cones UU, and

Tis-a toothed piece or.` rack, which operates the*- for thefpurpose of YforcingI ,the cones U into the coni` `cal holes in the pinions WV is a pin in the vibrating piece I, also seen at W in iig. 5.

X is a ,slot in the support K.

Y, in fig. 2, is an upright piece, attached tOthesupl fort K, and not seen in ig. 1.

Z isthe shaftiug, which meets in the centre of the upright Y. 11 are worms, one" secured permanently on the end ofthe shafting,` at the head-block; the other is made adjustable, that it maybe shifted ou the shaft or rod,

to 'accommodate it tothe tail-block.

. 22'are cog-wheels, oneof which is secu in fig. 1,

andthe other at 2 in fig. "3 is a screw on the side of the tail-block. A similar screwma'y'be seen at 3, ou the side of the headblock, at fig. 3. f 44am beariugsat theends of the screw 3. The saine may be seen at iig. 3. Y

1 4 is a female screw, with whicheach of' the knees conicalohole in the hubs of the Construction.

I vmake my head and tail-blocks of any suitable hard timber, and of suitable size, and secure the head; block to the pieces E E. I .make the tail-block mov; able or adjustable on the pieces lil E, so as to suit dif-` ferent lengths of logs.` o I make myscrews 3 3 of one-inch or one-aud-aquarter-inch iron,with bearings at each end, and a cog-wheel at one end of each; Said cogwheels'should beof the proper size for a suitable number of cogs to work in the worms or screws 1 1.'

. The Wormser screws 1 1 should be made of castl iron, and have a'hole bored through the centre, to fit the shafting'Z, with a set-screw tol hold them to their places on the shaft.

The bearings 4 4 may he made of east-irou or brass, and are secured to the sides of the blocks by means of 'screws or bolts. i

The female screws 1 4 are made of iron or brass, and are secured to tle upright knees by means/of' screwsor bolts.

The wheels may all be made of castsiron, and of This hole; 5 is intended to receive the turning on the the holes r suitable size to give the proper motion to the screws rIhe supports K and L L are of cast-iron, and firmly secured to the piece E. v f

`The pinions H should be castwith hubs on them, to admit of the boring a conical hole, to fit the cone U.

'The cones U are cast of iron, with a-groove around them, and should have a hol'e bored through them, so that they will slip easily on the shafting' Z.

The levers M are best lnade'of wrought-iron.

The rack T is of cast-iron.

The guide-piece Q may be cast, or may bemade of wrought-iron, of the proper size and thicknessto steady lthe lever R, and hold it to its place.

\'lhe lever R is made of cast-iron.

The cones, or their flanges or chambers, may have Slots'lgin, to slip over a pin in the shaft, to prevent their shaft; or a feather may be let into the sha'ting Z, and the cones U may have grooves cut, to slide over the feather, and thereby prevent them from turning on the shaft. v

ion G and wheel F, operating the' pinions H H, cansing the shafting Z to revolve, also the worms l 1, which,

working in the cogs of the wheels 2 2, operate on the screws 3 3. rPhe knees D D are forced back, forcing the log before them. By placing a piu or pins in two of Q', the lever R is checked. When the knees D D have moved a proper distance for the required thickness of the lumber, by moving the top of the lever It toward the tail-block, the wheel F engaging the other pinion H, the same effect will be produced on the knees D D.

After the knees D D have gone the full distance on the scales C, they may be run back, by removing the rack T, and turning the crank'O.v

If it is desired that one of the knees D should rel main stationary while the other is moved, one of the cones U may be drawn from the pinion H, by means of the lever M and shier V. By this means, may be sawed tapering lumber, as one end of the shafting Z will stand still while the other is operated.

' I do not claim the head4 or tail-block.. Neither do I claim operating them, or` either of them, by means of screws. Neither do I claim a coupling; but

That do I claim as my'invention, and desire to secure by Letters Patent of the United States, is-

1. The. conical couplings, formed of the pinions H and cones U, in combination with the Wheel F, pinion G, rack T, and lever R, with its support S.

2.- The conesU U, when arranged to slide on the shaft 'Z, in combination with the screws I I and wheels 2 2.

3. The arrangement of the wheel F, vibrating piece I, pinion G, Shaft P, pinions H H, and rack T.

J. F. -HARTMANN Witnesses: Y

T. A. DUGDALE, T. W. BENNETT. 

